作者采用延长期植入法，行骨内种植牙５１颗，经半年至２年的临床观察，认为种植牙与龈粘膜和骨组织界面的结合情况是种植成功的主要因素，而龈粘膜组织与种植牙颈部上皮袖口生物封闭区的形成又是种植成功的首要条件。本文总结种植技术应注意的问题，并对影响种植牙成功主要因素的预防治疗进行初步探讨。 The authors used extended-stage implantation, bone implants 51, after six months to 2 years of clinical observation, that the dental implant and gingival mucosa and bone tissue interface is the main factor in the success of planting, and gingival mucosa and The formation of closed area of ​​dental epithelium cuffs is the first condition for planting success. This article summarizes the problems that should be paid attention to in planting techniques, and preliminarily discusses the preventive treatment that affects the success of dental implant.